diff --git a/protocols/isis/ctl/src/test/java/org/onosproject/isis/controller/impl/lsdb/DefaultIsisLsdbAgeTest.java b/protocols/isis/ctl/src/test/java/org/onosproject/isis/controller/impl/lsdb/DefaultIsisLsdbAgeTest.java
new file mode 100644
index 0000000..45adbd9
--- /dev/null
+++ b/protocols/isis/ctl/src/test/java/org/onosproject/isis/controller/impl/lsdb/DefaultIsisLsdbAgeTest.java
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.isis.controller.impl.lsdb;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onosproject.isis.controller.IsisLspBin;
+import org.onosproject.isis.io.isispacket.IsisHeader;
+import org.onosproject.isis.io.isispacket.pdu.LsPdu;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Unit test case for DefaultIsisLsdbAge.
+ */
+public class DefaultIsisLsdbAgeTest {
+    private DefaultIsisLsdbAge defaultIsisLsdbAge;
+    private IsisLspBin isisLspBin;
+    private int resultInt;
+    private IsisLspBin resultLspBin;
+    private DefaultLspWrapper lspWrapper;
+    private LsPdu lsPdu;
+    private IsisHeader isisHeader;
+    private String lspId = "1234.1234.1234";
+
+    @Before
+    public void setUp() throws Exception {
+        defaultIsisLsdbAge = new DefaultIsisLsdbAge();
+        isisLspBin = new DefaultIsisLspBin(1);
+        lspWrapper = new DefaultLspWrapper();
+        lspWrapper.setBinNumber(1);
+        isisHeader = new IsisHeader();
+        lsPdu = new LsPdu(isisHeader);
+        lsPdu.setLspId(lspId);
+        lspWrapper.setLsPdu(lsPdu);
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        defaultIsisLsdbAge = null;
+        isisLspBin = null;
+    }
+
+    /**
+     * Tests ageCounter() method.
+     */
+    @Test
+    public void testAgeCounter() throws Exception {
+        resultInt = defaultIsisLsdbAge.ageCounter();
+        assertThat(resultInt, is(0));
+    }
+
+    /**
+     * Tests ageCounterRollOver() method.
+     */
+    @Test
+    public void testAgeCounterRollOver() throws Exception {
+        resultInt = defaultIsisLsdbAge.ageCounterRollOver();
+        assertThat(resultInt, is(0));
+    }
+
+    /**
+     * Tests addLspBin() method.
+     */
+    @Test
+    public void testAddLspBin() throws Exception {
+        defaultIsisLsdbAge.addLspBin(1400, isisLspBin);
+        resultLspBin = defaultIsisLsdbAge.getLspBin(1);
+        assertThat(resultLspBin, is(notNullValue()));
+    }
+
+    /**
+     * Tests getLspBin() method.
+     */
+    @Test
+    public void testGetLspBin() throws Exception {
+        defaultIsisLsdbAge.addLspBin(1, isisLspBin);
+        resultLspBin = defaultIsisLsdbAge.getLspBin(1);
+        assertThat(resultLspBin, is(notNullValue()));
+    }
+
+    /**
+     * Tests removeLspFromBin() method.
+     */
+    @Test
+    public void testRemoveLspFromBin() throws Exception {
+        defaultIsisLsdbAge.addLspBin(1400, isisLspBin);
+        defaultIsisLsdbAge.removeLspFromBin(lspWrapper);
+        assertThat(resultLspBin, is(nullValue()));
+    }
+
+    /**
+     * Tests age2Bin() method.
+     */
+    @Test
+    public void testAge2Bin() throws Exception {
+        defaultIsisLsdbAge.age2Bin(1);
+        assertThat(defaultIsisLsdbAge, is(notNullValue()));
+
+        defaultIsisLsdbAge.age2Bin(-1);
+        assertThat(defaultIsisLsdbAge, is(notNullValue()));
+    }
+
+    /**
+     * Tests startDbAging() method.
+     */
+    @Test
+    public void testStartDbAging() throws Exception {
+        defaultIsisLsdbAge.startDbAging();
+        assertThat(defaultIsisLsdbAge, is(notNullValue()));
+    }
+
+    /**
+     * Tests ageLsp() method.
+     */
+    @Test
+    public void testAgeLsp() throws Exception {
+        defaultIsisLsdbAge.age2Bin(1);
+        defaultIsisLsdbAge.startDbAging();
+        defaultIsisLsdbAge.ageLsp();
+        assertThat(defaultIsisLsdbAge, is(notNullValue()));
+    }
+
+    /**
+     * Tests maxAgeLsa() method.
+     */
+    @Test
+    public void testMaxAgeLsa() throws Exception {
+        defaultIsisLsdbAge.age2Bin(1);
+        defaultIsisLsdbAge.startDbAging();
+        defaultIsisLsdbAge.maxAgeLsa();
+        assertThat(defaultIsisLsdbAge, is(notNullValue()));
+
+        defaultIsisLsdbAge.age2Bin(1400);
+        defaultIsisLsdbAge.startDbAging();
+        defaultIsisLsdbAge.maxAgeLsa();
+        assertThat(defaultIsisLsdbAge, is(notNullValue()));
+    }
+
+    /**
+     * Tests refreshLsa() method.
+     */
+    @Test
+    public void testRefreshLsa() throws Exception {
+        defaultIsisLsdbAge.age2Bin(1);
+        defaultIsisLsdbAge.startDbAging();
+        defaultIsisLsdbAge.refreshLsa();
+        assertThat(defaultIsisLsdbAge, is(notNullValue()));
+
+        defaultIsisLsdbAge.age2Bin(1400);
+        defaultIsisLsdbAge.startDbAging();
+        defaultIsisLsdbAge.refreshLsa();
+        assertThat(defaultIsisLsdbAge, is(notNullValue()));
+    }
+}
+